My father admitted that when comes to pop music, he had little knowledge of it.

(2011年济南1月模拟)When________comes to saving energy，big changes start with small steps，like turning off the lights.

A．that B．this

C．it D．one

A new survey released by Yale University finds that Americans trust scientists most when ______ comes to information on climate change.

A. that B. it C. this D. there

We all agree that it is good to help those in need, but when ______ comes to giving away our money, things become strange.

A. that B. this C. it D. one

When comes to baseball, Dorothy knows little about it.

A. this B. that C. it D. one

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